Path: utzoo!mnetor!uunet!husc6!hao!ames!ucsd!sdcsvax!ucsdhub!jack!crash!gryphon!cadovax!keithd
From: keithd@cadovax.UUCP (Keith Doyle)
Newsgroups: comp.sys.amiga
Subject: Re: Sonic Tomfoolery
Message-ID: <1992@cadovax.UUCP>
Date: 15 Mar 88 18:51:52 GMT
References: <8802251858.AA21577@cory.Berkeley.EDU> <719@ur-cvsvax.UUCP> <4292@xanth.cs.odu.edu> <1527@sugar.UUCP>
Reply-To: keithd@cadovax.UUCP (Keith Doyle)
Organization: Contel Business Systems, Torrance, CA
Lines: 16

In article <1527@sugar.UUCP> karl@sugar.UUCP (Karl Lehenbauer) writes:
>and moving apart, this change in sound occurs repeatedly, and rythmically.
>This rythmic shifting and aligning caused by two notes playing at slightly 
>different frequecies causes this "beating" sound mentioned in an earlier 
>posting.  It is also the effect acheived by a wah pedal.

Not quite.  It is the effect achieved by delays, flangers and chorus pedals,
NOT by a wah.  A wah pedal is simply a moving bandpass filter, that has a
fairly high Q.  While it is true that you can simulate the effect of
flangers with a bank of moving bandpass filters (as has been done in
"phaser" pedals) to do this with a wah, you'd need about five of them
ganged together (or an old Roland Jet-Phaser), and even then, you are
only simulating part of the effect of delays/flangers/chorus units.

Keith Doyle
#  {ucbvax,decvax}!trwrb!cadovax!keithd  Contel Business Systems 213-323-8170